Soundproofing Basement Room?

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backfromnothing

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I have a room in my basement that is approximately 10' x 15'. The floor is bare concrete. It has two walls made of brick-textured poured concrete (basement wall), which is also painted. One wall is one-sided drywall on the house's center support wall, the other wall is double-sided drywall, and I do not believe there is any insulation inside that wall. The second wall also doesn't quite touch on one side, as the drywall was poorly cut to fit the textured concrete wall. This wall also hosts the door to the room, which is a cheap hollow door that doesn't fit very tightly to the frame. One of the concrete walls has an egress window in it that is approximately 3' x 3.5' in size. The ceiling is unfinished (floor joists & plumbing are exposed). Master bedroom is directly above this room and kid's bedroom is adjacent to it, across the support wall.

I am looking to turn this into a practice/studio space that I can use during the night hours without disturbing my sleeping family. Any suggestions to making this type of room completely (or mostly) sound isolated from the rest of the house? This will be used mostly for acoustic guitar and vocal recording, everything else can be done with headphones. My biggest worry is that I have a very loud singing voice and want to be able to record without waking the entire block. :)

I was thinking something like sound-damping material on all walls, then add a second sheet of drywall over everything. Same solution on ceiling, or possibly a drop ceiling with the sound-damping sheet on the joists above. Also thought adding insulation to both of the sheetrock walls and a rug or carpet on the floor. For acoustic treatments, I was thinking bass traps and some spot treatment on walls, but not sure what to do about that huge window without covering it completely (which I don't think I can legally do).

I am also on a budget... $0.00 ...So, the cheaper, the better.
 
Man, this is a common question. Really, you can reduce the sound to other rooms in the house to a slight degree, but it is really expensive to get realistically good results that would allow your family to sleep through a rehearsal . You would need to decouple the room from the rest of the house, in order to get true 'isolation'. You will be best arranging a schedule for the members of family.

Are you so loud that you have an issue already? I have a 4 month old baby (and much older wife), and just recorded guitar tracks and vocals in my basement studio tonight, with both of them sleeping through the session.
 
Well, as things are right now, my wife will wake up if she hears me talking fairly quietly in the room (I'm also a gamer, and like to chat with my teammates while I play). My goal is to be able to play acoustic guitar and sing for recordings and not disturb them.
 
NOTHING will do it like building a decoupled space but...
QuietWave Drywall Acoustic Barriers
QuietWave® named in
New Inventors: QuietWave
"In terms of using plasterboard to get the same effect (a common technique) 1 meter2 of QuietWave is the equivalent of 40kg of plasterboard via the old ‘mass loading’ technique.The principle of a constrained layer damping system is found in other places – modern aircraft block out noise with a visco-elastic membrane in between two aluminium skins, as do some speaker cabinets or computer cases."
 
Acoustic guitar and vocals will be easy to tame, unless you have duct work in there. Duct work is to home recordists as the internet is to nerds. She can probably hear you think thru the ducts. I have mine completely covered in shiny silver insulation. It only dampens the sounds. It took away the ring and ruin that those ducts wreaked but sound still finds its way thru unseen holes.
While it will cost you minions to decouple your space, sadly that is the only option to block your clairvoyant spouce.
 
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